名詞 elytron:

1. either of the horny front wings in beetles and some other insects which cover and protect the functional hind wings
   同義詞：wing case

el.y.tron

n.（名詞）
【復數(shù)】 el.y.tra[-tr…]
Either of the leathery or chitinous forewings of a beetle or a related insect, serving to encase the thin, membranous hind wings used in flight.Also called wing case
鞘翅：甲蟲或其它相關的昆蟲的一對堅韌的或幾丁質(zhì)的前翅，用于保護飛行中薄的、膜狀的后翅也作 wing case

來源：
New Latin
現(xiàn)代拉丁語
from Greek elutron [sheath] * see wel- 2
源自 希臘語 elutron [鞘] *參見 wel- 2

【引伸】
el.ytroid.